//

//  ViewController.m

//  CX－深入浅出 SDWebImage

//

//  Created by ma c on 16/3/24.

//  Copyright © 2016年 xubaoaichiyu. All rights reserved.

//

#import "ViewController.h"

#import "UIImageView+WebCache.h"

//由于网络问题这里使用的是本地服务器

static NSString * urlString = @"http://localhost/nvshen.jpeg";

@interface ViewController ()

@property (weak, nonatomic) IBOutlet UIImageView *imageVIew;

@end

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

}

- (IBAction)downLoad:(id)sender {

    /*

     options所有选项：

     //失败后重试 (经常使用)

     SDWebImageRetryFailed = 1 << 0,

     //UI交互期间开始下载，导致延迟下载比如UIScrollView减速。（经常使用）

     SDWebImageLowPriority = 1 << 1,

     //只进行内存缓存

     SDWebImageCacheMemoryOnly = 1 << 2,

     //这个标志可以渐进式下载,显示的图像是逐步在下载

     SDWebImageProgressiveDownload = 1 << 3,

     //刷新缓存

     SDWebImageRefreshCached = 1 << 4,

     //后台下载

     SDWebImageContinueInBackground = 1 << 5,

     //优先下载

     SDWebImageHighPriority = 1 << 8,

     //延迟占位符

     SDWebImageDelayPlaceholder = 1 << 9,

     //改变动画形象

     SDWebImageTransformAnimatedImage = 1 << 10,

     */

    /*

     只是获取图片

     1)self.imageVIew sd_setImageWithURL:[NSURL URLWithString:urlString]

     获取图片 完成后可操作

     2）[self.imageVIew sd_setImageWithURL:[NSURL URLWithString:urlString] completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, NSURL *imageURL) {

     }];

     获取动画（图片组）

     3）self.imageVIew sd_setAnimationImagesWithURLs:<#(NSArray *)#>

     从之前缓存里获取

     4）self.imageVIew sd_setImageWithPreviousCachedImageWithURL:<#(NSURL *)#> placeholderImage:<#(UIImage *)#> options:<#(SDWebImageOptions)#> progress:<#^(NSInteger receivedSize, NSInteger expectedSize)progressBlock#> completed:<#^(UIImage *image, NSError *error, SDImageCacheType cacheType, NSURL *imageURL)completedBlock#>

     */

       //较完整的操作

    /*

     URl：这里是网络地址

     placeholderImage：占为图片，在下载完成前显示

     options：操作选项

     completed：完成后－>

     */

    [self.imageVIew sd_setImageWithPreviousCachedImageWithURL:[NSURL URLWithString:urlString] placeholderImage:nil options:SDWebImageRetryFailed progress:^(NSInteger receivedSize, NSInteger expectedSize) {

        //这里是下载进度

        //receivedSize 已经下载的大小

        //expectedSize 总大小

    } completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, NSURL *imageURL) {

        //下载完成后

        //可以是成功，也可以是失败。

    }];

}

@end

    NSString * path = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);

    NSLog(@"%@",path);